There is a growing, multibillion-dollar industry to help fortify school buildings, despite a lack of evidence that such changes will make schools any safer (“No easy answers on how to secure schools,” Metro, March 6). Making schools more prisonlike will make them less safe and less conducive to learning. Though horrifying and tragic, school-based mass shootings are still rare, while bullying and student alienation remain widespread. Instead of wasting money on metal detectors and security cameras, schools should place greater emphasis on community building and teaching conflict-resolution skills.